EP0823870B1 - Verfahren zur herstellung von holzfasern - Google Patents
Verfahren zur herstellung von holzfasern Download PDFInfo
- Publication number
- EP0823870B1 EP0823870B1 EP96907997A EP96907997A EP0823870B1 EP 0823870 B1 EP0823870 B1 EP 0823870B1 EP 96907997 A EP96907997 A EP 96907997A EP 96907997 A EP96907997 A EP 96907997A EP 0823870 B1 EP0823870 B1 EP 0823870B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wood
- steam
- hot steam
- per
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920002522 Wood fibre Polymers 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 24
- 239000002023 wood Substances 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000006163 transport media Substances 0.000 claims 3
- 238000003825 pressing Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 claims 1
- 239000002025 wood fiber Substances 0.000 abstract description 23
- 239000011094 fiberboard Substances 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
- F26B17/107—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers pneumatically inducing within the drying enclosure a curved flow path, e.g. circular, spiral, helical; Cyclone or Vortex dryers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/24—Wood particles, e.g. shavings, cuttings, saw dust
Definitions
- the invention relates to a method for producing Fiberboard made of wood fibers, with the crushed wood particles as a wood chips treatment with saturated steam under pressure and Temperature exposure to reduce the binding force be subjected to the wood binders treated in this way Wood chips in a mill for the extraction of wood fibers be crushed, the saturated steam fiber mixture underneath Drying and admixing a glue-like binder first separator or a separator group to separate the Wood fibers are fed from the gaseous medium and the separated wood fibers, if necessary with additional admixture a gaseous medium and implementation further process steps such as bunkering, sifting and / or Separation of the wood fibers from the medium in a second Separator for the production of the fiberboard of a form and Press line are fed.
- glued fibreboard In contrast to pressboard, glued fibreboard has made of wood fibers much better strength values, larger ones Homogeneity and improved machinability.
- the wood fibers are used for the production of the fiberboard obtained so that raw wood in one Chopper is crushed into so-called wood chips.
- the wood chips are in one mill standing under saturated steam and the actual ones Fibers obtained in the form of thin and fine threads.
- the saturated steam / fiber mixture is then piped blown into a so-called current dryer, where, if necessary while reducing the treatment pressure, more fluid Glue is injected and the wet steam with hot air from for example 170 ° C is mixed.
- Cools by absorbing the steam components of the wet steam the mixed air while drying the wood fibers relatively strongly, with a vapor-air mixture at about 40 ° relative humidity and a dew point of approx. 50 ° C sets.
- This comparatively dry mixture compared to wet steam then becomes one or more cyclones for separation of the wood fibers obtained.
- warm air is blown off while the heavier fibers be carried out below.
- the fibers obtained in this way can now, if necessary, by performing further process steps, a molding and press line are fed, in which the Fiberboard can be produced by curing the glue.
- the invention has for its object a generic To create manufacturing process in which the energy consumption is reduced.
- This object is achieved in that the Saturated steam fiber mixture for drying and conveying superheated steam is added.
- saturated steam or wet steam or saturated steam a vapor state corresponding to the Wet steam area of the known steam tables.
- unsaturated steam which is able to absorb further steam and on the wet steam area borders.
- the measure according to the invention can initially be based on the Supply of dry hot air to the saturated steam / fiber mixture be dispensed with, since the non-saturated which is now mixed Superheated steam to dry the saturated steam / fiber mixture in able and also the transport of the mixture in the pipelines can take over.
- the first separator Since the superheated steam is now under pressure, it is required the first separator as a pressure-resistant cyclone to train. This cyclone is separated from the fibers after vaporous medium removed from the superheated steam and fed to a distributor from where it differs in an energy-saving manner Usages can be supplied.
- the amount and the state variables of the according to claim 1 supplied superheated steam is preferably chosen so that the initially saturated steam completely into the superheated steam state is transferred.
- the remaining, possibly still existing excess energy can be used in a further partial flow for domestic water heating, Building heating or be used for other heating purposes.
- the invention is based on a schematic process diagram for example.
- the pressurized saturated steam-wood fiber mixture is then via a pipeline 4 working as a cyclone first separator 5 fed where the wood fibers from the medium be separated.
- Glue can be mixed into the pipeline 4, which in the Steamed wood fibers encased and over a feed 7 with the help of a fan 8 in the pipeline 4 superheated steam is injected, which is used to overheat a heat exchanger 9 has gone through.
- the state variables of the superheated steam supplied and its Amount are chosen so that the saturated steam while drying the Wood chips are converted into superheated steam.
- the superheated superheated steam which coexists with the glue Wood fibers is fed to the first separator 5, leaves it still overheated and arrives into a distribution chamber 10, where several partial volume flows are removed can be.
- the largest partial volume flow I is the already mentioned heat exchanger 9 supplied, there superheated and, as already described, by means of the fan 8 blown into the pipeline 4.
- a second partial volume flow II is via a pipeline 11 fed to the chipper 1 and serves to preheat the wood chips.
- the fiber material deposited in the first separator 5 becomes then handed over to an air classifier 12 in the coarser one Wooden components or lumps of glue are separated and as so-called heavy goods are removed from the process.
- the air required for wind sifting is controlled using a Fan 13 fed to a heat exchanger 14, the Heat exchanger 14 by means of a third partial volume flow III, which is taken from the distribution chamber 10, with heat for air preheating is supplied.
- a fourth partial flow IV directly the heated air blown into the air classifier 12 fed and serves to increase the air humidity in the air classifier 12. Because of this, the temperature of the sighted Wood fibers are increased.
- the air-wood fiber mixture After passing through the air classifier 12, the air-wood fiber mixture by means of a fan 15 a second separator 16 supplied, which leaves the heated air as exhaust air, while the separated wood fibers removed as useful goods and their further processing in a molding and press line can be supplied.
- a further partial volume flow V can be carried out with the appropriate energy supply the process of the distribution chamber 10 removed and for example for hall heating or domestic water heating be used.
- One or more of the partial volume flows labeled with Roman numerals can one in the described method Wet scrubber, not shown, are fed where accumulating Impurities can be removed.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
- 1
- Hacker
- 2
- Autoklav
- 3
- Mühle
- 4
- Rohrleitung
- 5
- erster Abscheider
- 6
- Zuleitung
- 7
- Zuführung
- 8
- Ventilator
- 9
- Wärmetauscher
- 10
- Verteilerkammer
- 11
- Rohrleitung
- 12
- Windsichter
- 13
- Ventilator
- 14
- Wärmetauscher
- 15
- Ventilator
- 16
- zweiter Abscheider
Claims (7)
- Verfahren zur Herstellung von Faserplatten aus Holzfasern, bei dem zerkleinerte Holzpartikel als Hackschnitzel einer Behandlung mit Sattdampf unter Druck- und Temperaturbeaufschlagung zur Reduzierung der Bindekraft der holzeigenen Bindemittel unterworfen werden, die derart behandelten Hackschnitzel in einer Mühle zur Gewinnung der Holzfasern zerkleinert werden, das Sattdampf-Fasergemisch unter Trocknung und Zumischung eines leimartigen Bindemittels einem ersten Abscheider oder einer Abscheidergruppe zur Trennung der Holzfasern vom gasförmigen Fördermedium zugeführt wird und die abgeschiedenen Holzfasern gegebenenfalls unter erneuter Zumischung eines gasförmigen Fördermediums und Durchführung weiterer Verfahrensschritte wie Bunkerung, Sichtung und/oder Abscheidung der Holzfasern aus dem Fördermedium in einen zweiten Abscheider zur Herstellung der Faserplatten einer Form- und Pressenstraße zugeführt werden, dadurch gekennzeichnet, daß dem Sattdampf-Fasergemisch zur Trocknung und Förderung Heißdampf zugemischt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Sattdampf durch die Heißdampf-Zumischung in den Heißdampf-Zustand überführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Heißdampf nach dem ersten Abscheider (5) einer Verteilerkammer (10) zugeführt wird, der zumindest ein Teilvolumenstrom I zur Rückführung in das Sattdampf-Fasergemisch entnommen wird, wobei der Teilvolumenstrom I in einem Wärmetauscher (9) überhitzt wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der Verteilerkammer (10) ein Teilvolumenstrom II des Heißdampfes zur Vorwärmung der Hackschnitzel entnommen wird.
- Verfahren nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß der Verteilerkammer (10) ein Teilvolumenstrom III des Heißdampfes zur Vorwärmung der Sichterluft entnommen wird.
- Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß der Verteilerkammer (10) ein Teilvolumenstrom IV des Heißdampfes zur Zumischung zur Sichterluft entnommen wird.
- Verfahren nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß der Verteilerkammer (10) ein Teilvolumenstrom V des Heißdampfes zur Brauchwassererwärmung oder Gebäudeheizung entnommen oder sonstigen Wärmetauschern zugeführt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19515734 | 1995-05-03 | ||
DE19515734A DE19515734A1 (de) | 1995-05-03 | 1995-05-03 | Verfahren zur Herstellung von Holzfasern |
PCT/DE1996/000569 WO1996034726A1 (de) | 1995-05-03 | 1996-03-26 | Verfahren zur herstellung von holzfasern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0823870A1 EP0823870A1 (de) | 1998-02-18 |
EP0823870B1 true EP0823870B1 (de) | 1999-02-17 |
Family
ID=7760651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96907997A Expired - Lifetime EP0823870B1 (de) | 1995-05-03 | 1996-03-26 | Verfahren zur herstellung von holzfasern |
Country Status (7)
Country | Link |
---|---|
US (1) | US6113821A (de) |
EP (1) | EP0823870B1 (de) |
AT (1) | ATE176768T1 (de) |
AU (1) | AU698294B2 (de) |
DE (2) | DE19515734A1 (de) |
ES (1) | ES2129958T3 (de) |
WO (1) | WO1996034726A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005039842A1 (de) | 2003-10-07 | 2005-05-06 | Schenkmann-Piel Engineering-Gmbh | Verfahren zur herstellung von faserplatten aus holzfasern |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL184356B1 (pl) | 1996-04-12 | 2002-10-31 | Marlit Ltd | Sposób wytwarzania lignocelulozowych materiałów złożonych |
GB9625068D0 (en) * | 1996-12-02 | 1997-01-22 | Marlit Ltd | Method for production of lignocellulosic composite materials |
ATE244626T1 (de) | 1996-12-09 | 2003-07-15 | Plato Internat Technology B V | Verfahren zur herstellung von zellulosefaseraggregaten |
WO2006042559A1 (en) * | 2004-10-22 | 2006-04-27 | Force Technology | Method and device for drying a flow of biomass particles |
DE102010034763B3 (de) * | 2010-08-18 | 2011-12-22 | Kronotec Ag | Verfahren und Anlage zur Aufbereitung von Holz für die Herstellung mitteldichter Faserplatten |
CN105683691A (zh) * | 2013-07-25 | 2016-06-15 | 科泰克能量股份公司 | 生物质加工装置及方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2872337A (en) * | 1953-12-30 | 1959-02-03 | Weyerhaeuser Timber Co | Method of coating a felted fibrous mat |
DE1199977B (de) * | 1956-06-28 | 1965-09-02 | Weyerhaeuser Timber Company | Verfahren und Vorrichtung zur Behandlung von im Trockenverfahren gewonnenen, nicht auf-geschlossenen Holzfasern oder anderen zellulosehaltigen Fasern mit waermehaertendem Bindemittel und Trocknung der Fasern von ihrer Heisspressung zu Formkoerpern |
SE413784B (sv) * | 1976-08-06 | 1980-06-23 | Isel Sa | Sett och anordning for att utnyttja i defibreringszonen utvecklat verme for att minimera angforbrukningen vid framstellning av massa for fiberskivor |
DE3609506A1 (de) * | 1985-03-25 | 1986-10-30 | Koppers Co., Inc., Pittsburgh, Pa. | Verfahren zum herstellen einer masse aus zelluloseteilchen und harz fuer die herstellung von faserplatten |
US4855179A (en) * | 1987-07-29 | 1989-08-08 | Arco Chemical Technology, Inc. | Production of nonwoven fibrous articles |
DE3728123A1 (de) * | 1987-08-22 | 1989-03-02 | Hoechst Ag | Verfahren zur herstellung von zerfasertem zellulosematerial, insbesondere holzfasern, fuer die herstellung von faserplatten |
DE4122842C2 (de) * | 1991-07-10 | 1993-11-18 | Glunz Ag | Verfahren zur Herstellung von Faserplatten aus stückigen Holzpartikeln und Isocyanat als Bindemittel |
SE9302993L (sv) * | 1993-09-15 | 1995-03-13 | Sunds Defibrator Ind Ab | Framställning av fiberboard |
US5554330A (en) * | 1995-01-31 | 1996-09-10 | Isoboard Enterprises Inc. | Process for the manufacturing of shaped articles |
US5624616A (en) * | 1995-04-20 | 1997-04-29 | Brooks; S. Hunter W. | Method for co-refining dry urban wood chips and blends of dry urban wood chips and thermoplastic resins for the production of high quality fiberboard products |
US5637326A (en) * | 1995-12-04 | 1997-06-10 | Fuisz Technologies Ltd. | Apparatus for making chopped amorphous fibers with an air transport system |
US5725818A (en) * | 1996-06-28 | 1998-03-10 | Forintek Canada Corp. | Manufacture of hog fuel board |
-
1995
- 1995-05-03 DE DE19515734A patent/DE19515734A1/de not_active Withdrawn
-
1996
- 1996-03-26 AT AT96907997T patent/ATE176768T1/de active
- 1996-03-26 ES ES96907997T patent/ES2129958T3/es not_active Expired - Lifetime
- 1996-03-26 US US08/945,650 patent/US6113821A/en not_active Expired - Lifetime
- 1996-03-26 WO PCT/DE1996/000569 patent/WO1996034726A1/de active IP Right Grant
- 1996-03-26 EP EP96907997A patent/EP0823870B1/de not_active Expired - Lifetime
- 1996-03-26 DE DE59601315T patent/DE59601315D1/de not_active Expired - Lifetime
- 1996-03-26 AU AU51417/96A patent/AU698294B2/en not_active Ceased
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005039842A1 (de) | 2003-10-07 | 2005-05-06 | Schenkmann-Piel Engineering-Gmbh | Verfahren zur herstellung von faserplatten aus holzfasern |
Also Published As
Publication number | Publication date |
---|---|
US6113821A (en) | 2000-09-05 |
EP0823870A1 (de) | 1998-02-18 |
AU5141796A (en) | 1996-11-21 |
AU698294B2 (en) | 1998-10-29 |
ATE176768T1 (de) | 1999-03-15 |
DE19515734A1 (de) | 1996-11-07 |
WO1996034726A1 (de) | 1996-11-07 |
DE59601315D1 (de) | 1999-03-25 |
ES2129958T3 (es) | 1999-06-16 |
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